Composition of matter for the finishing-coat on wainscoting, walls, and the like.



L035. UUMIUSI IUNS,

omma 0R PLASTIC.

GEORGE CLAIPHAM, OF HAMILTON, ONTARIO, CANADA.

COMPOSITION OF MATTER FOR THE FINISHING-COAT ON WAINSCOTING, WALLS, AND

THE LIKE.

No Drawing.

Specification of Letters Patent.

Application filed January 13, 1909. Serial No. 472,056.

Patented Nov. 30, 1909.

Black foundr dust from the tumblei sii'i 23 parts. Plaster's 8 ment 5 i ust" 22/4 L Re. 1 50 The first six articles or ingredients are to be thoroughly mingled by agitation.

In using the above named composition, and when the first named six ingredients have been thoroughly mixed together, I then take the last named ingredient, namely, lime putty, adding sufiicient water in a cavity formed in the lime putty, then placing the first mentioned mixture in the water, and the whole thoroughly mixed to ether. The black foundry dust which is f l of minute particles of iron and particles of fine sand which adhere to the castings imparts a dark color, and has a hardening effect on the mixture. The black foundry dust, which is first passed through a fine sieve, by its combination with the other ingredients, makes a compact and solid composition when pressed and worked on the wall and enables the finished surface to be given, and toretain, a high polish which will not show dirt, can be easily washed, and is substantially impervious to water. By reason of the presence of the black foundry dust in the composition, when the surface is polished with a trowel or othersuitable implement there is obtained varying light and dark shading effects of bluish gray color which are not obtained with any other substance of which I have knowledge. The plaster of paris assists to set the mixture, to allow the work to be finished more quickly. The Portland cement prevents water from penetrating and has set and hardened on the wall.

helps the sanitary effect on the mixture. The marble dust imparts a glittering appearance to the composition, and has a hardening effect. The dry or lamp black gives a dark blue coloring to the composition, and the marble dust gives a bright finish to the same, especially so when the composition The retarder is for the purpose of preventing the material from quick setting on the wall, and to allow time for working the material 011 the wall. The lime putty and water amalgamates all the parts together and imparts a proper working consistency to the mixture and adhering to the wall.

The first mentioned six ingredients ma be mixed together for an indefinite period, previous to using, and when the whole, or a ortion of said mixture thereof, is required or use, then the second mixture of lime putty and water may be added thereto and thoroughly mixed therewith.

In app ying the composition to a wall, after it has been laid on well, it should be gone over with a brush and trowel until the surface is well filled up and a dry troweling should be kept up until there is a good polish.

The present composition will adhere to mortar, hard wall plaster, on Portland cement mortar.

I claim: a

1. The herein described composition of matter, consisting of black foundry dust, plaster of paris, Portland cement, marble dust, dry or lamp black, retarder, lime putty and water, substantially as described and for the purpose specified.

2. The herein described composition of matter, consisting of black foundry dust, plaster of paris, Portland cement, dry or lamp black, retarder, lime putty and water, substantially as described and for the purpose specified;

3. A com osition consisting of black foundry dust, aster of paris and lime puttv.

4. A composition consisting of black foundry dust, plaster of paris, cement, dry or lamp black and lime putty.

GEORGE CLAPHAM.

Witnesses:

J OHN H. Harmer, D. MCLAREN. 

